Lady--Here's Your Wreath by James Hadley Chase - Paperback Mystery

When journalist Nick Mason got a hot tip to investigate the frame-up of a man being executed for murder, he didn't know what he was in for. At the gas chamber, it was Vessi's last words that gave Mason the clue to a peculiar cover up at the respectable Mackenzie Fabric Corporation. But when Mason gets warned off by a cold-eyed gunman and a dangerous hooker called Blondie, he would have abandoned the whole investigation . . . if it weren't for the irresistible Mardi, the girl from Mackenzie Fabrics who might be able to lead him to the truth.